87754221 has 12 divisors (see below), whose sum is σ = 134212572. Its totient is φ = 55061376.

The previous prime is 87754207. The next prime is 87754253. The reversal of 87754221 is 12245778.

It can be written as a sum of positive squares in 2 ways, for example, as 78057225 + 9696996 = 8835^2 + 3114^2 .

It is not a de Polignac number, because 87754221 - 2⁵ = 87754189 is a prime.

It is a super-3 number, since 3×87754221³ (a number of 25 digits) contains 333 as substring.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87754201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 286626 + ... + 286931.

It is an arithmetic number, because the mean of its divisors is an integer number (11184381).

Almost surely, 2^87754221 is an apocalyptic number.

It is an amenable number.

87754221 is a deficient number, since it is larger than the sum of its proper divisors (46458351).

87754221 is a wasteful number, since it uses less digits than its factorization.

87754221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573580 (or 573577 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 87754221 is about 9367.7222952007. The cubic root of 87754221 is about 444.3815353297.

Adding to 87754221 its reverse (12245778), we get a palindrome (99999999).

It can be divided in two parts, 8775 and 4221, that added together give a square (12996 = 114²).

The spelling of 87754221 in words is "eighty-seven million, seven hundred fifty-four thousand, two hundred twenty-one".